Silicone Negative Moulds for Repoussé Masters
硅胶负模复制浮雕母版
标签：硅胶负模, 母版复制, 细节保真, 教学
精细浮雕母版（油泥/蜡稿）可用加成型硅胶翻负模：选流动性 5 000–15 000 mPa·s 的硅胶，浇注后 4–6 h 固化脱模，得弹性负腔；再以低熔点合金或环氧树脂浇出正模，供錾刻时靠模比对。硅胶复制分辨率达 5–10 μm，能保留指纹级细节，便于同一母版多次复制、教学示范，且不损伤原稿。
Reproduce fine repoussé masters (clay/wax) with addition-cure silicone: pour a 5 000–15 000 mPa·s silicone, demould after 4–6 h for a flexible negative; cast a positive from low-melt alloy or epoxy as a reference model while chasing. Silicone captures 5–10 μm detail including fingerprint texture, allowing repeated copies and teaching demos without harming the original. ---